H265 encoding - also known as High-Efficiency Video encoding ( HEVC) is a method of compressing video for storage on to devices such as hard drive. Compared to the current encoding method which is H264, the video storage requirement is reduced by as much as 60%! Less storage space = cheaper hard drive or longer recording times.

Tripple stream encoding -allows the Qtron IP camera to display real-time video footage even if your NVR is set to record at a lower frame rate which is an issue with most NVRs

Audio input - for a microphone which allows sound to be recorded.

Factory reset button - on cable in case you need to factory default the cameras, there's no need to wait or call anyone for a reset file.